SPOOK Meaning of SPOOK in English n. & v.n. 1 colloq. a ghost. 2 US sl. a spy. v. US sl. 1 tr. frighten, unnerve, alarm. 2 intr. take fright, become alarmed. [ Du., = MLG spok, of unkn. orig. ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012